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From: A. Kretschmer <andreas.kretschmer@schollglas.com>
To: pgsql-sql@postgresql.org
Subject: Re: Passing input to a view?
Date: Thu, 10 May 2007 08:14:27 +0200
Message-ID: <20070510061427.GA16765@a-kretschmer.de> (raw)
In-Reply-To: <4642B5C9.5000505@autoledgers.com.au>
References: <4642B5C9.5000505@autoledgers.com.au>

am  Thu, dem 10.05.2007, um 14:03:53 +0800 mailte Paul Lambert folgendes:
> Is it possible to define a view to use input parameters rather than a 
> hard-wired value in a where clause?

As far as i know, no.


> Instead of having it set to 1-Jan-2007 and 10-May-2007 for the dates, 
> can I specify that those values should be passed to the view? Or would I 
> need to change this to an SQL language function?
> 
> I can't find anything in the documentation that answers this, but maybe 
> I'm not looking hard enough.

You can write a so called 'set returning function' instead.
Read more:
http://www.postgresql.org/docs/current/static/xfunc-sql.html#XFUNC-SQL-TABLE-FUNCTIONS


Andreas
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Andreas Kretschmer
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